print stops randomly mid print

im using arduino mega + ramps 1.4,
mid print (sd card or usb cable), reprap stops printing, i can still use lcd, temperatures are still in control

problem occured when my bed couldn't reach 80 degrees (before i heated it to 100 easily)
prints started stopping after 5-10 minutes (mostly after M190 - bed heating)
i thought it was stepstick fault, lowered current as much as possible, even added fan - radiators are cool
tried to change power supply to more powerful atx, didnt help
i printed two successful plates 12h each with bed off, then it stopped working with bed off too
as i checked nothing get overheated, i even added radiator to 5v regulator and atmega itself

i have no idea what i can do, anyone had similar problem?

looks like a power issues. what is your power supply current ?

Maybe your motor, heatbed or heater use more amps after 5-10 minutes.

And maybe your pc's memory doesn't enough. I have a same problem too, then i realize my macbook pro's hasn't enough memory. ı cleared some things and problem solved. Try it.

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Custom 3D Printer,

Mechanical Engineer

I'm having a smilar issue. The all axis just stop moving randomly throughout the print, increasing print time as well as melting bottom layers producing bad prints. I'll try some of the solutions proposed above and get back to ya'll.